Replace the open-coded CPU-offline notification with common code.
In particular avoid calling scheduler code using RCU from an offline CPU
that RCU is ignoring.
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@xxxxxxxxxx>
---
v2: improved commit message
---
arch/mips/kernel/smp-cps.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/arch/mips/kernel/smp-cps.c b/arch/mips/kernel/smp-cps.c
index 6d45f05..0aee71b 100644
--- a/arch/mips/kernel/smp-cps.c
+++ b/arch/mips/kernel/smp-cps.c
@@ -408,7 +408,6 @@ static int cps_cpu_disable(void)
return 0;
}
-static DECLARE_COMPLETION(cpu_death_chosen);
static unsigned cpu_death_sibling;
static enum {
CPU_DEATH_HALT,
@@ -444,7 +443,7 @@ void play_dead(void)
}
/* This CPU has chosen its way out */
- complete(&cpu_death_chosen);
+ (void)cpu_report_death();
if (cpu_death == CPU_DEATH_HALT) {
vpe_id = cpu_vpe_id(&cpu_data[cpu]);
@@ -493,8 +492,7 @@ static void cps_cpu_die(unsigned int cpu)
int err;
/* Wait for the cpu to choose its way out */
- if (!wait_for_completion_timeout(&cpu_death_chosen,
- msecs_to_jiffies(5000))) {
+ if (!cpu_wait_death(cpu, 5)) {
pr_err("CPU%u: didn't offline\n", cpu);
return;
}
--
2.7.4
